Parallel steel wire finished rope stretching device with anti-twisting structures and anti-twisting construction method thereof

The invention discloses a parallel steel wire finished rope stretching device with anti-twisting structures. The device comprises a stretching device consisting of a pull rope anchor head, an anchor cushion plate, support feet, a working nut, an inner bushing, a stretching rod, a jack and a stretching nut, and one or two anti-twisting structures; the anti-twisting structure I comprises a rotatingstop body, a rotating stop slide block and a guide base; the rotating stop body is fixed at a piston ejecting part of the jack; the guide base is fixed on a cylinder block of the jack; the rotating stop slide block is positioned between the rotating stop body and the guide base, and can move up and down along with a piston of the jack; a Huff nut of the anti-twisting structure II is screwed with athin Huff nut through threads of the stretching rod; one end of the rotating stop arm is fixed on the two sides of the Huff nut through screws; and the other end of the rotating stop arm is joined ona support foot stand colum